tests: stop posting to the removed add-item route in the share ACL test

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_integration.py

@@ -1265,7 +1265,6 @@ async def test_a_view_share_writes_nothing_and_an_edit_share_writes_only_text(ap
     # View: every write is a 404, the same answer a stranger gets (#1984).
     writes = [
         recipient.patch(f"/api/notes/{nid}", json={"body": "mine now"}),
-        recipient.post(f"/api/notes/{nid}/items", json={"text": "eggs"}),
         recipient.patch(f"/api/notes/{nid}/items/0", json={"checked": True}),
         recipient.post(f"/api/notes/{nid}/trash"),
         recipient.put(f"/api/notes/{nid}/labels", json={"label_ids": []}),
@@ -1285,7 +1284,6 @@ async def test_a_view_share_writes_nothing_and_an_edit_share_writes_only_text(ap
     assert (await edited.get_json())["labels"] == []
     ticked = await recipient.patch(f"/api/notes/{nid}/items/0", json={"checked": True})
     assert ticked.status_code == 200
-    assert (await recipient.post(f"/api/notes/{nid}/items", json={"text": "eggs"})).status_code == 201
 
     # A #tag typed into someone else's note files it under the OWNER's tags.
     owner_tags = [lb["name"] for lb in (await (await app_client.get("/api/labels")).get_json())["labels"]]